Fig. 4
The Venn diagrams show the number of core operational taxonomic units that were shared or not shared by the control group and treatment group individuals, depending on overlap. The common and specific genera in the a Control group. b PF group. c Day 0. d Day 7. e Day 15. f Day 30. Core genera were identified with a detection threshold of 0.001 in at least 90% of the samples and a 75% prevalence. Basal diet with no supplementation (CON), supplemented with L. reuteri BF-E7 + L. salivarius BF-17 (PF; 1 g/calf/d)